名校
1 . 若x,y满足
则
的最大值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423eb8fa997803c0a39f52bc9b88595f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bab85c3a2b9a698efc4f8887f43cbd19.png)
A.1 | B.4 | C.-1 | D.-4 |
您最近一年使用:0次
2 . 已知实数
满足
,则目标函数
的最小值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aed0206de008379538b3bf036993122.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75407f5349719aba26f58213459793eb.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
3 . 已知实数
满足
,则目标函数
的最小值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aed0206de008379538b3bf036993122.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75407f5349719aba26f58213459793eb.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
4 . 当实数
满足不等式组
,恒有
,则实数
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bc774358ca880fcb4be39f27d7725e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8045fd49bca2a44d33a902d8674c4ec4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次